While not as pronounced as the California Academy of Sciences museum, I think it's safe to say that this undulating green roof covering the new h2hotel is just as beautiful. The hotel, which gets its name from being the sister to Hotel Healdsburg, was designed by David Baker + Partners and is pursuing LEED Gold certification. It's also a nominee for the People's Choice Award from the Redwood Empire Chapter of the AIA.

Spanish Lookotels is on a mission to build a new kind of hotel for modern consumers seeking quality at a low cost. Each energy-efficient hotel will be prefabricated with up to 100 rooms and Lookotels has financing with plans to build 10 hotels in the next five years throughout Spain and Europe. The company told us in an email that they're also looking for partners in the U.S.

Planted in the middle of a new vineyard in Newberg, a small town in Willamette Valley, The Allison Inn and Spa is doing some amazing things in terms of reducing the ecological footprint associated with typically high-impact hospitality operations. According to projections, the resort and vineyard was designed by GGLO to save 48% on utility costs, as well as reduce potable water irrigation use by 78% and fixture water use by 37%, compared to a comparable non-green project.

This is the first economy hotel in the nation to obtain LEED certification, according to a recent press release by Accor North America. Located in Northlake near Texas Motor Speedway, the Motel 6 combines European style rooms, modern detailing, and eco-friendly elements while still remaining economic and approachable. The green hotel opened in October 2009 and features some of the following green elements:

In response to a design challenge issued by the USGBC, WATG and IDEO created "Haptik," a sustainable hotel suite that blends sustainability and luxury in a high-tech environment. The suite, named after a Greek term for experiencing interactions based on touch, won the challenge and was built as a model at HD Expo 2010 last month. Courtesy of WATG, take a look inside:

Earlier this year, Hutton Hotel opened its doors in Nashville, Tennessee. Hotel Interactive recently referred to the building as "one of the most sustainable focused properties" it had ever seen, although the developer, Amerimar Enterprises, decided to skip LEED certification. Built from the skeleton of a former office building, Hutton Hotel has 248 rooms and some of the following green elements: